Ethernet/Airport Extreme Conflict?

I just set up a new Mac Pro computer. I have a cable modem via Time Warner using a SMC Modem/Router. I have 5 fixed ip addresses. If I connect my MacPro directly it works great.
However, I connect my Modem/Router to my Airport Extreme. I have a PC, Macbook Pro, iMac and now a Mac Pro connected using one fixed ip for the Airport and DHCP for the other computers. The other computers see each other just fine. However, the Mac Pro cannot see the network with the Ethernet directly connected to the SMC Modem/Router. It does however connect directly to the internet without problem. I am using a different fixed ip address for the Ethernet direct connect and the Airport Extreme.
I have spoken with Apple Care and they can't figure it out.
Obviously it is something in the configuration of the MacPro and/or Airport Extreme.
HELP!
thanks,
GM
Mac Pro Mac OS X (10.4.9)

Hi,
I have a new MacPro, connected via DHCP to my Airport. On top, I connected my Powerbook via Ethernet-1 port (peer-to-peer, fixed IP on both computers, router/DNS server entry on MacPro set to fixed IP), for obtaing high data rate for backup reasons. All in network environment 'automatic'.
Afterwards, connection to the Powerbook worked fine, connection via AirPort worked for IP URLs like http://192.168.1.1, but not to name based URL's (like http://www.apple.com) towards the internet.
Removing the DNS server entry within Ethernet-1 made the internet access via Airport working again.
Maybe this does not hit your problem. But it may be a clue?
Stefan

Similar Messages

I have a current 2TB Time Capsule. I would like to add more ethernet ports for needed expansion. Will an Airport Extreme conflict with the Time Capsule for needed ethernet ports and will wireless from both units conflict?

I own a current 2TB Time Capsule and I need to expand my network system to include more ethernet (wired) ports. I am considering an Airport Extreme that would give me enough wired ports. Will the wireless capabilities of both units conflict with each other? I only need one wireless network. Thank you for any help.

While you could certainly add an AirPort Extreme to provide additional Ethernet ports, you could also save about $150 by purchasing an inexpensive switch, such as one of these:
http://www.amazon.com/D-Link-DGS-1005G-5-Port-Gigabit-Desktop/dp/B003X7TRWE/
http://www.amazon.com/TRENDnet-Unmanaged-GREENnet-Auto-Negotiation-Auto-MDIX/dp/ B001QUA6R0/
Consumer grade Ethernet switches typically come in five and eight port configurations. Just be aware that a five port switch only conveys the ability to add three additional devices. An eight port switch conveys the ability to add six additional devices.
An 8 port switch provides twice the capacity of a 5 port switch for considerably less than twice the cost. The price difference between the two is often only $10 or so.
I just checked, the 8 port version of the Trendnet switch above costs exactly $4 more.
An AirPort Extreme is a very flexible full featured wireless router, and would provide three additional LAN ports for wired devices. If all you need is a few more ports though, it's overkill.

Airport Extreme - Conflicting DHCP Range - Only 1 router set up

Backstory:
I recently upgraded my router to the new Airport Extreme from an older Airport Extreme in order to take advantage of the Gigabit ports. The old router worked great, just wanted to take advantage of my 300mbps up/down speeds.
Problem:
My router is flashing orange and I get an error that pops up on my computer from the Airport Utility stating 'Conflicting DHCP Range'. Normally this problem occurs when there is more than one router/bridge on a single network. However, I have only the one router with no guest network set up. The wireless connection works fine, but an error pops up and interrupts me every few minutes and gets very annoying and the router is flashing orange, indicating a problem. We have tried turning on and off the 5GHz.
I've searched the forums front to back and have found others with this problem but only if they have more than one router set up on the same network.
We have 2 macbook pro retinas running OSX 10.8.3, an AppleTV, an HP printer, and 2 iPhone 5's that connect to the network.
What can I do to address this issue?!!??
Thank you,
Nick

When you configured the new AirPort Extreme, did you use the option to "Create a new network", or did you use the option to "Replace an existing device"?
Can you provide the make and model number of your modem?

Ethernet/Airport Extreme

I have a new iMac with airport express and my old computer is a PC connected directly to DSL Modem which is also wireless. Once all my software and file migraton is comlete I plan to retire the PC. At that tiem I will connect the printer directly to the iMac.
The iMac as soon as it was turned on found the wireless network and signed on. Printing file sharing and access to another mac in the hosue is all working. When I retire the PC does it make sense to connect the iMac directly to the DSL modem with an ethernet cable since the airport will be on anyway...would performace be better via the hard wire?
iMac Mac OS X (10.4.7) 500GB HD ; 2GB ram; 2.33mhrz dual intel chip;SuperDrive-PIONEER DVD-RW DVR-K06:

When I retire the PC does it make sense to connect the iMac directly to the DSL modem with an ethernet cable since the airport will be on anyway...would performace be better via the hard wire?
The wireless network is typically faster than a broadband connection.

How to setup a network with a time capsule, airport extreme and an airport express?

Hello.
First I want to make it clear all my knowledge off wireless networks is going on forums on the internet, before a couple of months ago I didn't realize wireless networking was so intricate so forgive my lack of experience.
I just bought a time capsule (today, 4th generation), I have an airport extreme bought in January 2011 (they just got refreshed so mine is now one generation old) and the same with my airport express (bought in January).
I originally bought the airport extreme and setup a wireless network using the dual band setup. I have no issues with the 5ghz network and most of my devices run on wireless n so I had no issues with them. my only two wireless devices that can not use the 5ghz network is my iPhone 4's which use wireless n but it has to use the 2.4ghz signal. Problem is in my apartment I am bombarded with other peoples 2.4ghz networks so my signal is terrible 10-15 feet from the airport extreme. Near my extreme I am getting signal ranges around 15mb to 20 mb. When Im about 15 minutes away in my bedroom (so one wall in between) my signal plummets to 1-2 mb. sometimes as low as 0.17mb which is not good. I got the airport express to extend my range and placed it in my bedroom. . After setting up the airport express the signal still was terrible. I researched and realized that if the signal strength ***** then the airport express cant boost the signal as much which makes sense in hind sight. I then researched setting up a roaming network or a WDS network. Per research a WDS network was not recommended b/c I was not using a wireless g network. I attempted to create a roaming network and then realized that you can not use an airport express in a roaming network. This has led me to now buy a time capsule.
First, in my setup do I or should I have the time capsule as the primary? I believe its more powerful than the airport extreme but Im not sure if that matters in a network that is distributing wifi from ethernet (thats how I am connected the extreme and the time capsule)
so can I do
cable modem ETHERNET Airport extreme(in the living room where its always been and works great in that immediate area) (3rd generation) ETHERNET Time Capsule(in the bedroom where I usually get poor signal) (4th gen) and then an airport express connecting to the 2.4ghz signal in the bedroom where the time capsule also is EXTENDING the wireless range?
or should it be the time capsule first bc its more powerful?
I tried setting up this setup and everything is green but I don't know if what I am doing is actually working on full cylinders b/c I am confused on some aspects. mainly on the airport extreme which is the primary device I have under the wireless tab selected create a wireless network and on the time capsule it also is on create a wireless network with the network name being exactly the same. Should it be changed to extend a wireless network? and then bridge mode? Should I have different channels for the different devices that are on 2.4ghz?
I am open to hear ANY suggestions, or ideas to improve my setup. PLEASE PLEASE HELP!!!!!!!, lol its been 5 long months of poor internet in my bedroom where my wife has her setup with a roku box and wifi tv (I have those hardwired for now) but mainly for her iPad and iPhone b/c its so bad sometimes she has to turn wifi off and use 3G. I have same issue in my bathroom, sometimes Im getting decent signal and sometimes its so bad I can't open the link on an RSS feed in safari which I have to assume doesn't require that much bandwith?
I have no wireless g devices. The only device I need 2.4ghz for is my iPhone 4's but they both use n also. All my other deivices connect on 5ghz and my 5ghz network is decent, a lot better than the 2.4ghz network atleast.

You wrote so much that I find it hard to address all your concerns. However, here are some thoughts:
1) I'd configure the Time Capsule as the "main" router, connected directly to your cable modem. Configure it to "create a wireless network" and to "Allow this network to be extended". Configure the other devices to "Extend a wireless network".
2) Put any device that's extending the network half way between the main router and the wireless clients. If the signal from the main router is weak at the cllient's location, then the extending device will also receive a weak signal.

Extended Airport Extreme 802.11ac - Slow Wi-Fi

Hi All..
I have a rather frustrating scenerio here and could do with a few pointers as things arn't going my way
I recently purchased two new AP 802.11ac for my home network, setup as follows: -
Sky Modem 20Mbps
IP 192.168.0.1
DHCP
Ethernet
Airport Extreme 802.11ac (Downstairs) Version 7.7.1
Static IP 192.168.0.20 - Reserved at Modem
DNS 192.168.0.1 - Not sure if this should point to modem, advice here if possible
DNS 8.8.8.8
Wirless on, secured by WPA2, also guest network
Ethernet
Airport Extreme 2010 (Downstairs) Version 7.6.4
Static IP 192.168.0.40 - Reserved at Modem
DNS 192.168.0.1 - Not sure if this should point to modem, advice here if possible
DNS 8.8.8.8
Wireless
Airport Extreme 802.11ac (Upstairs) Version 7.7.1
Static IP 192.168.0.30 - Reserved at Modem
DNS 192.168.0.1 - Not sure if this should point to modem, advice here if possible
DNS 8.8.8.8
Wirless set Extending the above network, secured by WPA2, also guest network
Ethernet
iMac 27" 2011 (Upstairs)
Static IP 192.168.0.31 - Reserved at Modem
DNS 192.168.0.1 - Not sure if this should point to modem, advice here if possible
DNS 8.8.8.8
Running OSX Server 2.2.1 (169)
So.. I understand there are many many factors here but my issues are that the iMac (Server) downloads at the expeteced rate of 19Mbps, however anything on wirless pulls around 4Mbps at best and file transfer between the iMac and Macbook Pro (Wireless) not really happening.. This is also the case for all other clients connected to the Wireless networks (5GHz, 2.5GHz and Guest).. In fact, guest network has no connection at all...
I don't think that any of my devices has the AC ability if that matters..
Further details from 'Option + Wi-Fi Icon' on Macbook Pro :-
PHY Mode 802.11m
Channel 100 (DFS, 5 GHz)
Security: WPA2 Personal
RSSI -70
Transmit Rate: 108
MCS Index: 11
I appreciate this is probably an odd setup, but any help would be appreciated..

Ok... netspeed just resolved itself across the wirless back up ro 19Mbps..
However, file transfer between the iMac and Wireless Macbook is around 5Mbps only, any ideas?
Any feedback on the dns would also be appreciated though!

Apple TV often drops connection with AirPort Extreme and Express stations

Here's my setup:
- Mac Pro in basement office connected to AirPort Extreme (802.11n) station via Ethernet
- AirPort Extreme station running WPA/WPA2 security and 802.11n (b/g compatible)
- AirPort Express station across basement room connected to stereo expressly for AirTunes purposes
- Apple TV and MacBook Pro on house ground floor, both connecting to the network via WiFi
(unless specified, the software and firmware in my devices is all extremely up to date. I write about Apple news for a living so I know when the updates land and install all of them almost immediately)
Here's what's going wrong:
Since I have one of the first gen Apple TVs with a 40GB hard drive but a 100GB iTunes library, I use streaming almost 100% of the time. The Apple TV can usually connect to my iTunes library for streaming via WiFi, but if the AirPort Express (a b/g device, mind you) is active on the network, the Apple TV and even my MacBook Pro get booted off the network usually between 12-24 hours, if not 48. Sometimes WiFi seems to work itself out and I can get the MacBook Pro back online, sometimes it even needs a full restart, as Mac OS X will start giving me nothing but "there was an error trying to join this network" warnings. Just as frustrating though, the Apple TV getting booted off means I need go through the whole tedious process of connecting it to WiFi again (it doesn't remember the password for some stupid reason), and then manually surfing again through the Sources list just to get back to streaming my media.
What the heck is going on? Is it the kind of security I'm running? Should I try WEP or... none at all? I would try "downgrading" the Extreme station's network type to only b/g (excluding n entirely), but I don't see that option in the radio settings anymore; it's all just flavors 802.11n now. When I set up the AirPort Express to connect to the network just for AirTunes streaming to the stereo, I used the setup wizard that the AirPort Utility provides. Should I attach it a different way? Perhaps manually set it to "participate in a WDS network" or "extend a wireless network?"
Any thoughts or similar experiences are very, very appreciated. My wife and I love this setup, but its unreliability is really getting on my nerves. Thanks in advance.
Message was edited by: bedoughty

Firstly, the easiest bit (although I don't believe you need to do this):
I would try "downgrading" the Extreme station's network type to only b/g (excluding n entirely), but I don't see that option in the radio settings anymore
You will get additional settings if you hold down the option key while browsing the radio settings drop down menu.
Moving on: Unfortunately a dropped connections seems to be a problem with umpteen causes and not only is it difficult to troubleshoot with someone in a forum it can also be made even more difficult because many problems are associated with network settings on a router that the person who is trying to help is unfamiliar with.
However you seem to be convinced your problems arise when your express is running which may narrow things down a little if correct, if not it may actually lead us away from the answer to your issue.
Is it the kind of security I'm running? Should I try WEP or... none at all?
I use WPA and have no problems (password = 8 Characters)
Should I attach it a different way? Perhaps manually set it to "participate in a WDS network" or "extend a wireless network?
I have my expresses set to participate in a WDS network, but that's because I use them for other things other than itunes, I would have thought 'join a network' would be fine.
You could check that all your devices are using independent IP addresses and all are using the same subnet. You could also check that no two devices have the same mac address, I've been told a million times this can't happen, but I've seen it. You may be wise to check these things before and after your devices have been 'kicked off the network", you may even want to write them down to see if any are changing.

Most efficient way to connect 2 x Airport Extremes & 1 x TC

Recently purchased the new Airport Extreme and would like to most efficiently connect that to my existing home network, which consists of Airport Extreme (gen. 4) and Time Capsule (gen. 4).
Current setup is as follows:
Wall cable --> modem --> (ethernet) Airport Extreme 1 (gen. 6) --> (WiFi) Airport Extreme 2 (gen. 4) & (WiFi) Time Capsule (gen.4)
Wondering if its possible, and would it make data transmission stronger/faster, to connect APE2 and TC together with a ethernet cable in each LAN port? I live in a 2-story house and have both APEs opposite ends of the house.
Also, is it possible to make the TC only a Time machine without WiFi routing? Thank you.

Connecting the 2 routers by ethernet is roaming, right?
Right, and it's the ideal way to build wireless networks with a large service area.
A "wirelessly extended" network - in which a second or third access point joins the network wirelessly - is a compromise of limited utility. The base station that connects wirelessly can only "extend" the signal it receives; it can't improve upon it. An Ethernet cable obviates that limitation.
Don't rule out the possibility so quickly. As long as your dwelling doesn't use solid rock walls for example, and you own it, installing an Ethernet cable with wall receptacles can easily be accomplished by a qualified electrician at a cost you may find surprisingly affordable. Or, you can do it yourself. The parts required are inexpensive.
Another option is to use something called "powerline adapters". They have their own caveats and limitations and don't work in all circumstances. They're not cheap either since you will need at least one pair, but the labor to install them is nil.

Slingbox needs to be "On" for my Airport Extreme to put out Wi-Fi?

I have a SlngBox (device used to transmit your incoming TV signal to the interenet for remote viewing). The problem I am having is that after plugging the SlingBox into my Airport Extreme via ethernet, my airport extreme no longer transmits interenet through Wi-Fi UNLESS I have my slingbox "On"... Here's the setup: Cable Modem <ethernet> Airport Extreme <ethernet> SlingBox.
My Mac and iPhone seem to be connected to the Airport Extreme via Wi-Fi, but there is NO internet signal UNLESS my SlingBox is turned "On"....Does anyone have any idea why this might be happening and how I might be able to fix it? Thanks!

You can install AirPort Utility on either a Mac or PC, but there would be no reason to make any changes to your existing configuration on the AirPort Extreme unless you need to do so.
Download files are here:
http://support.apple.com/downloads/#airport

Slingbox and Airport Extreme

Hi there,
I just bought a new Airport Extreme router, and I am trying to get my Slingbox Classic set up on it. I am not figuring this out, so I thought I would post a question about it. Hopefully somebody out there has had this problem and figured out a way to resolve it.
Here's how I set it up:
First, I created a DHCP reservation for the Slingbox. I have the MAC address of 00:13:b6:01:xx:xx setup to be forwarded to 192.168.1.3.
Next, I set up my port mapping to forward Public UDP and TCP port 5001 to 192.168.1.3. Those ports are send to Private UDP and TCP ports 5001.
But here's the thing, when I look at the logged in DHCP clients that are logged in, the Slingbox doesn't show up. Also, when I run the Slingbox client it can't find the Slingbox (which is what I would expect if the Slingbox weren't logged in).
So what am I missing here? Why isn't this working?
Thanks!
Robert--

Valid for Airport Utility.app v 5.2.1.
"AEBS" is the Gigabit Ethernet Airport Extreme, MAC 00:1c:b3:ad:a8:38
"Remote" is the older mushroom-shaped Airport Extreme, MAC 00:03:93:eb:a9:89
• Configuring the AEBS. Best to do this connected via ethernet. Some flakey things happen using either airport-connected Macs.
Airport: Wireless: Wireless Mode: Participate in a WDS network
Airport: WDS: WDS Mode: WDS main
Airport: WDS: Allow wireless clients: Checked
Airport: WDS: WDS Remotes: add the remote (00:03:93:eb:a9:89)
Airport: Access: MAC Address Access Control: Timed Access (because wireless security is OF)
(default) Never
00:11:24:6E:ED:7E G5 Every Day, All Day
00:13:B6:02:51:27 Slingbox Every Day, All Day
00:03:93:EB:A9:89 WDS Remote Every Day, All Day
Internet: DHCP: DHCP Range: 10.0.1.1.x
Internet: DHCP: DHCP Reservations:
10.0.1.5 Remote 00:03:93:EB:A9:89
10.0.1.6 Slingbox 00:13:b6:02:51:27 (You will NOT see this device as an AEBS wireless client, but you use this IP address for port mapping)
Internet: NAT: Enable default host at: unchecked
Internet: NAT: Enable NAT Port Mapping Protocol: checked
Advanced: Port Mapping: Allow: Remote: all ports are 5001; Private IP Address is 10.0.1.6
• Configuring the Remote. Initially I had to do this with an ethernet connection to my G5; after configured it showed up in Airport Utility along with AEBS.
Airport: Wireless: Wireless Mode: Participate in a WDS network
Airport: Wireless: Wireless Security: None
Airport: WDS: WDS Mode: WDS remote
Airport: WDS: Allow wireless clients: Checked
Airport: WDS: WDS Main: 00:1C:B3:AD:A8:38
Airport: Access: MAC Address Access Control: Not Enabled
Internet: Internet Connection: Configure IPv4: Using DHCP
Internet: Internet Connection: Ethernet WAN Port: Automatic (Default)
Internet: Internet Connection: Connection Sharing: Off (Bridge Mode)
Any Remote settings not listed were probably the defaults, since I configured it after a reset.
• Finally, I had to connect the Remote Airport to the WDS Main via ethernet cable to get the latter to recognize the Remote. Once that was done it recognized it wirelessly.
To configure the Slingbox, Open Slingplayer, and use the Slingbox Menu.

Airport Extreme has ethernet connection but no internet connection

I am having an airport extreme connectivity issue that has yet to be resolved. For me, the cable modem (a Motorola Surfboard) recognizes the airport extreme (I have the round white saucer one) but the airport extreme, despite giving me an 'ethernet' connection (that also shows up as full signal strength in the menu bar), cannot connect to the internet, no matter what I do.
Seems the airport extreme is not recognizing/picking up the ip address of my computers.
The airport base station is recognized by airport utility, has an ID and I can name it as well as create a network, but no matter what I do and despite being told that I am connected to the internet via ethernet, there is no connection to the internet.
I have a dual G5 desktop hooked up directly to the cable modem and am trying to wirelessly connect a new macbook pro intel core dual.
Each computer can access the internet when directly hooked up to the cable modem, but neither can access the internet wirelessly.. so it's not the computers, nor is is the cable modem. I called Time Warner, all is fine with that connection.
Both my ethernet cables work (checked them both). So it must be the airport extreme.
I was on the phone with apple tech support for 5 hours yesterday!!! They made me run through all the things I did myself. From trying to reconfigure and rename the airport to completely resetting the airport. None of this worked.
And right now I'm on hold for a multi-media product specialist with apple tech support.
But they didn't do a thing for me yesterday so I'm hoping someone on here may know what to do.
I think I need a new airport extreme. Anyone???

Hello Laura, Jim, Richard...
Now my internet connexion work on my AEBS (Airport Extreme Base Station)... It seems that (for me) DHCP was the problem...
DHCP server (10.0.1.x) activated on the AEBS conflict with DHCP server (192.168.1.x) activated on the modem.
Before the AEBS 5.7 update (i made yesterday) this configuration with two DHCP servers with different IP addresses worked well... but not now...!
So, i disabled the Modem DHCP server. I rebooted the modem and the AEBS and success, my internet connexion worked again...
I used manual setup with fixed IP, submask, DNS to connect the AEBS to the modem...
I hope this could help you, Laura and Jim...
Sorry for mistakes, i'm french mac user
Message was edited by: mikeosx06

Will Time Capsule conflict with Airport Extreme?

I just purchased a Time Capsule but after reading the discussion board it looks like it might conflict or override my Airport Extreme? Also, if I do connect it, will it ever erase any information on its own without me manually deleting? I think I'm experiencing buyers remorse. My main purpose is to free up space on my iMac. I could have just purchased a simple external hard drive but this seemed like a better choice at the time. Help!

My main purpose is to free up space on my iMac. I could have just purchased a simple external hard drive but this seemed like a better choice at the time. Help!
Depending on the age of the Mac a USB, Firewire or Thunderbolt drive would be a much better choice.. as an addition to the TC.. TC is still needed if you have no backup. If you store your files on the external drive think about where you want them to be backed up to.
it looks like it might conflict or override my Airport Extreme? Also, if I do connect it, will it ever erase any information on its own without me manually deleting?
No the TC and airport can live happily together.. just decide which is router and which is bridge.. as far as possible connect together with ethernet.. but you can wirelessly connect as well.
A TC is a backup device not really a NAS.. it has no means to back itself up.. but it will not erase anything without you deliberately erasing it..
Perhaps you mean the way Time Machine works.. if you erase something on the disk.. TM will eventually erase it from the backups.. this is very true.. but that is specific to TM and backups.. not to stuff you store on the TC. That is not erased unless you do it deliberately.
I think you should read over Pondini's FAQ to understand a bit more about TM and TC.
http://pondini.org/TM/FAQ.html
I learned a heap from them.. the home pages as well.
http://pondini.org/TM/Time_Capsule.html
Although TM is loaded on every Mac since Leopard.. and very convenient to use.. it isn't the only show in town.. and other utilities can do disk images and incremental backups.. without half the issues that TM does. Although more limited in restore potential as well.

My westel modem (that I rent from my phone provider) quit working with the internet. My airport extreme seems to be working from the dsl (phone) connection through the westel, then through the ethernet cabled to the airport extreme. Do I need the modem?

My westel modem (that I rent from my phone provider) quit working with the internet. My airport extreme seems to be working from the dsl (phone) connection through the westel, then through the ethernet cabled to the airport extreme. Do I need the modem? Is the ethernet route less efficent that going throught the internet connection? If I don't need the westel modem; how do I make the dsl conection to the pone port in the wall? Thanks for help on this!

Ok, so are you saying that your Internet is or isn't working? Does it work if you plug your computer directly into your computer and bypass the router (make sure you power cycle the modem when you do this)? If it is working this way, then a new modem isn't going to solve a problem with your Internet not working. If it is going slow (try running a speedtest) then you need to call your phone company to have them take a look at why your Internet is slow. If it runs fine this way and then slows back down when you go back through your router there is something else going on. Try unplugging both the modem and the router, let the modem fully sign back in and connect to the Internet, after it gets signed in, plug your router in, and then after it boots up fully, try running the speedtest again...See if that helps any? Sometimes it's just an IP conflict that happens when the dynamic IP that is assigned by your Internet Service Provider changes and the change doesn't flow smoothly.

Airport Extreme and Airport Express conflict and failure

I spent 2.5 hours on the phone with Apple and still could not get my Airport Extreme and Airport Express to function. My Apple TV failed as well:
* Connected AEX through Airport Utility to internet. Airport Utility replaced my old configuration on my LinkSystem router. Green light.
* Checked Apple TV. No connection available. Unplugged cable modem, waited 1 minute and tried again. Apple TV connected. No problem.
* Flashing amber light on Airport Express for Airtunes. Does not show up in wireless device list. I call Apple.
* Reset Express. Still no signal. Connect via Ethernet cable. Reconfigure. Green Light. Music works.
* Check internet connection, in order. Apple TV fails. No connection to server.
* Apple TV reset. No connection. No wireless network found.
* Reset Airport Express. Reconfigure channel specifications. No connection with ATV or Airport Express.
* Disconnect Airport Express. Reconfigure. With ATV disconnected I get Airport Express back. Green light but this time no music. Remote speakers appear on itunes, but no music is transmitted.
* Did a total wireless reset on Extreme, and now both Express and ATV are not working.
Frustrated and dissapointed I disconnected everything put back my 5 year old Linksys router and within 15 seconds both ATV and Airport Express worked flawlessly.
How can this happen? What is wrong with this device? It is my second one in a week. The first one made no wireless connection to my Mac at all.
After sulking for hours I tried again, this time leaving the Express out of the equation and reconfiguring the ATV to take over airtunes. After a reset it did fine. Now I have a pure n signal running at 5hz. ATV works again. So does internet.
Any suggestions? Is there something I did not try?
I tried the Firewall trick, the accept all incoming connections trick, the disabling of the iv6 trick, the join a wireless connection trick, and everything else Apple Care could think of.

Maybe I was not clear enough on my post and configurations,
I had a Linksys before I purchased the airport extreme. My airport express joined the Linksys network for the purpose of airtunes. This worked flawlessly from day one.
Airport Extreme asked in the utility to take over an existing network or replace a router. If you chose this option it adopts all passwords, wpa/2 configurations for security and such.
I chose this option thinking that since it is an apple product it would take over everything and work. My airport express had origianlly been set to join my old Linksys network. Since the airport extreme took over this configuration it should work.
Apple stated many times that there seemed to be a conflict and kept asking me about the placement of my airport extreme.
My Linksys was never part of a bridge or a network within a network. It was removed before the Extreme was ever turned on.
After all the problems and hours of trying with Apple, i find it funny that all I had to do to restore eveything was plug my old Linksys back in and conect all the cables, and bam....it worked.
So what is wrong with the airport extreme, or is there something wrong with itunes 8 and its interface with the express? For whatever reason the extreme cannot make the express and my ATV work at the same time.

Extend Airport Extreme Network via Ethernet to Airport Express

I am trying to extend a gen 4 Airport Extreme by hardwiring ethernet to a 2nd gen Airport Express and will add a second Airport Express if I can get the first one to work. I have a large network with a 24 port switch and aiport utility 6.3.2 (most recent as of this date)
First question:
When expanding my network using the hardwired Airport Express can I name the new network anything I want or should it be exactly the same as the Extreme Network. I would prefer to name it differently so I can keep track of which network my devices are acturally joining but I will be happy simply to get this to work either way.
Second question:
After repeated attempts to configure my hardwired Aiport Extreme, I get the following yellow status error:
Yellow Internet Connetion
Yellow No DNS Servers
Yellow Conflicting DHCP Range
Observation:
Many of the suggestions here and the link posted in a previous post are not based upon the most recent Airport Untility software so that may contribute to my lack of success so far. I am using the most recent version.

Even though the express was hardwired to the extreme during the set up process it was choosing to "extend" the 5 ghz network which I have activated on my extreme. I assume this is okay. It seems to be. It offered me no other option during the set up.
Both 2.4 GHz and 5 GHz bands will be extended if the extending device supports dual bands.
I configured the express by plugging it directly into the LAN port of the Extreme. Once configure, I plugged the express into my 24 port switch. It worked.
That's a good way to do things. If the Express works when connected directly to the Extreme, and doesn't when you connect it elsewhere on the network, then you know that you have a wiring or switch issue somewhere.
I choose to keep the express network name and base station name the same as those on the extreme. They worked. Since I really want to keep track of which network I am logged into, I later changed both the network name and the base station name for the express and it seems to all work under the new names.
Either will work, as long as you don't mind logging on and off of networks to switch. Most users prefer to have one "big" network. Then, they can walk a laptop from one area to another, stay on the same network and the Mac will automatically switch to pick up the strongest signal from the closest access point.
I activated the 5 ghz on the newly configured and newly named express. It seems to work.
As it should.
While configuing the express I got the error message metioned above a couple times. I kept trying the same procdure with out changeing anything and eventually it worked.
I can't duplicate that issue, but glad that things worked after a few tries.
Since my AppleTV on the second floor has difficulties connecting with the extreme, I am thinking of plugging it in to the express directly. How do you feel about this? WOuld I be better off running another separate ethernet wire off the switch?
Always the best plan to connect any network devices using Ethernet if you can. The best networks are the ones with an Ethernet "backbone". You can connect the Apple TV to the Express or the switch, whichever is easier. Personally, I prefer to connect devices to a switch if possible just to keep things simpler and make any troubleshooting easier.
This whole system with an extreme, 3 expresses, 3 appletvs, 12-14 cameras, a 24 port switch and up to 50 devices on the network at one time (computers, phones, ipads, etc, etc) works reasonably well considering the demands I put on it.
That's quite a home network. Glad that things are working. I am sure that you notice better wireless performance now with the two AirPort Express devices wired into the Ethernet backbone.
If we could get more users to set up their networks this way, most of the complaints that we get about slow wireless, intermittent connections, etc would go away.
It's not easy to run the Ethernet cable for some users, but I have yet to hear from the first user who ever regretted doing it.

Ethernet/Airport Extreme Conflict?

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